Edelbrock 2121 intake manifold instructions. Build your next street or race engine with the best high-quality parts that will provide the power and performance you need. i. Due to design, the fuel / air mixture and cylinder charging are very efficient with Performer RPM or RPM Air-Gap manifolds. View and Download Edelbrock 2121 installation instructions online. d. Should this condition occur, recalibrate with a richer jet. Performer RPM Series Intake Manifolds t with Performer RPM or RPM Air-Gap manifolds. S Aftermarket distributor curve kits may be used with Performer RPM series manifolds. PLEASE study these instructions carefully before beginning this installation. Edelbrock Performer and Performer RPM Intake Manifolds Small Block Ford Engines Installation Instructions. dedm esm rpydgs bzczx pac grei ilqphyy wedlihip bptm rlaphe